[INFO] cloning repository https://github.com/crmckenzie/rust-error-libraries
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/crmckenzie/rust-error-libraries" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrmckenzie%2Frust-error-libraries", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrmckenzie%2Frust-error-libraries'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 103b99038c65b9c2896b50bed24242e8975e155b
[INFO] checking crmckenzie/rust-error-libraries against master#2ad5292aea6328113b55968b4322528d48261316 for pr-80243
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrmckenzie%2Frust-error-libraries" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/crmckenzie/rust-error-libraries on toolchain 2ad5292aea6328113b55968b4322528d48261316
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/crmckenzie/rust-error-libraries
[INFO] finished tweaking git repo https://github.com/crmckenzie/rust-error-libraries
[INFO] tweaked toml for git repo https://github.com/crmckenzie/rust-error-libraries written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/crmckenzie/rust-error-libraries already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ddf903ae3229a5e9e81b4ce0415e0e9e00bb65e3d5bf32a9775576982cfa69e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7ddf903ae3229a5e9e81b4ce0415e0e9e00bb65e3d5bf32a9775576982cfa69e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ddf903ae3229a5e9e81b4ce0415e0e9e00bb65e3d5bf32a9775576982cfa69e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ddf903ae3229a5e9e81b4ce0415e0e9e00bb65e3d5bf32a9775576982cfa69e", kill_on_drop: false }`
[INFO] [stdout] 7ddf903ae3229a5e9e81b4ce0415e0e9e00bb65e3d5bf32a9775576982cfa69e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 02082d7a57f85fdff2bc1fb08f661b2a7ec631affc16bfd086f0d5f353df2b4e
[INFO] running `Command { std: "docker" "start" "-a" "02082d7a57f85fdff2bc1fb08f661b2a7ec631affc16bfd086f0d5f353df2b4e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling cc v1.0.47
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]     Checking objekt v0.1.2
[INFO] [stderr]     Checking doc-comment v0.3.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling err-derive v0.2.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling snafu-derive v0.6.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.8
[INFO] [stderr]    Compiling derive_more v0.99.2
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking thiserror v1.0.8
[INFO] [stderr]     Checking snafu v0.6.0
[INFO] [stderr]     Checking errors v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 53.74s
[INFO] running `Command { std: "docker" "inspect" "02082d7a57f85fdff2bc1fb08f661b2a7ec631affc16bfd086f0d5f353df2b4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02082d7a57f85fdff2bc1fb08f661b2a7ec631affc16bfd086f0d5f353df2b4e", kill_on_drop: false }`
[INFO] [stdout] 02082d7a57f85fdff2bc1fb08f661b2a7ec631affc16bfd086f0d5f353df2b4e